<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        ul{
            list-style: none;
        }
        li{
            background-color: blue;
            text-align: center;
            width: 80px;
            color: aliceblue;
            font-family: 宋体;
        }
        .a{
            width: 100%;
            height: 100%;
            display: block
            
        }
        a:hover{
            /* color:red; */
            background-color: red;
        }

    </style>
</head>
<body>
    <ul>
        <li><a class="a">首页</a></li>
        <li><a class="a">产品世界</a></li>
        <li><a class="a">绿色服务</a></li>
        <li><a class="a">绿色家园</a></li>
        <li><a class="a">资讯中心</a></li>
        <li><a class="a">关于新飞</a></li>
    </ul>
</body>
</html>